More ideas from Martin
Breech-loading swivel gun with reinforcing bands around the barrel, cast in iron (and in a single piece). Purely anti-tank/anti-APC/anti-defensive positions (not anti-personnel). Fires either a) a solid cannonball or b) "grape shot", which is the same as cannister, except with much larger and fewer balls (grape shot used against tanks and APCs).

Breech-loading swivel gun with reinforcing bands around the barrel, cast in iron (and in a single piece). Purely anti-tank/anti-APC/anti-defensive positions (not anti-personnel). Fires either a) a solid cannonball or b) "grape shot", which is the same as cannister, except with much larger and fewer balls (grape shot used against tanks and APCs).

Ancient plow-seeder-backfiller in one.

Ancient plow-seeder-backfiller in one.

Glider bombers. Anti-ship: 3-4 large flechettes. Anti-land troops: used at night, against targets Illuminated by fire. Made of bamboo, silk & waxed paper. Launched from coastline or artificial islands we've built in our waters. Wing frame: 2 bamboo limbs, tied together at the ends, bent into oblong shape. Body frame: two (or just 1?) bamboo limbs, tied together in a triangle. Skin: waxed paper, reinforced by "fish net"-mesh from above. Silk is strong & light, also used for the tow line.

Glider bombers. Anti-ship: 3-4 large flechettes. Anti-land troops: used at night, against targets Illuminated by fire. Made of bamboo, silk & waxed paper. Launched from coastline or artificial islands we've built in our waters. Wing frame: 2 bamboo limbs, tied together at the ends, bent into oblong shape. Body frame: two (or just 1?) bamboo limbs, tied together in a triangle. Skin: waxed paper, reinforced by "fish net"-mesh from above. Silk is strong & light, also used for the tow line.

Seeder. First you use the plow to create "trenches", then you drive the seeder over these trenches, releasing a few seeds into each of them every few centimeters.

Seeder. First you use the plow to create "trenches", then you drive the seeder over these trenches, releasing a few seeds into each of them every few centimeters.

Seeder. First you use the plow to create "trenches", then you drive the seeder over these trenches, releasing a few seeds into each of them every few centimeters.

Seeder. First you use the plow to create "trenches", then you drive the seeder over these trenches, releasing a few seeds into each of them every few centimeters.

Plow. This winch-pulling technique can be used to pull a plow (using manpower instead of oxen, b/c you have to have people anyway and cattle kept for labor require a lot of feed, thus agricultural land, to sustain them).

Plow. This winch-pulling technique can be used to pull a plow (using manpower instead of oxen, b/c you have to have people anyway and cattle kept for labor require a lot of feed, thus agricultural land, to sustain them).

Ancient plow-seeder-backfiller in one.

Ancient plow-seeder-backfiller in one.

Plow. This winch-pulling technique can be used to pull a plow (using manpower instead of oxen, b/c you have to have people anyway and cattle kept for labor require a lot of feed, thus agricultural land, to sustain them).

Plow. This winch-pulling technique can be used to pull a plow (using manpower instead of oxen, b/c you have to have people anyway and cattle kept for labor require a lot of feed, thus agricultural land, to sustain them).

Backfiller (dirt protects seed rows from birds).

Backfiller (dirt protects seed rows from birds).

Quinquereme. More levels = more crew = more powerful boat. Sails are included. Ores allow it to sail without wind and give more power for towing things behind it (e.g. floating tanks).

Depiction of the position and angle of the rowers in a trireme. The form of the parexeiresia, projecting from the deck, is clearly visible.

Artillery. Mortars are limited by barrel length, firing angle and size of ammunition. "Mugs" (serving both as the breech and cartridge for one firing) have the same interior and exterior diameter as the barrel. The mug doesn't go inside the barrel; acts as an extension to the barrel. A short segment of pipe (larger than barrel) goes over barrel and mug to keep them together and reinforce mug. Wooden wedge slides down hole in larger pipe, keeps mug in place when firing. BP fuses. Recoil…

Artillery. Mortars are limited by barrel length, firing angle and size of ammunition. "Mugs" (serving both as the breech and cartridge for one firing) have the same interior and exterior diameter as the barrel. The mug doesn't go inside the barrel; acts as an extension to the barrel. A short segment of pipe (larger than barrel) goes over barrel and mug to keep them together and reinforce mug. Wooden wedge slides down hole in larger pipe, keeps mug in place when firing. BP fuses. Recoil…

Backfiller (dirt protects seed rows from birds).

Backfiller (dirt protects seed rows from birds).